Small tip on the zooming your desktop image: The zooming feature has an option to do smoothing, which I imagine defaults to on. You want to turn that off if you are using zooming as a debug technique. With it turned off, zoom becomes a very useful way to analyze antialiasing issues.
> On Feb 25, 2016, at 7:04 AM, Mark Waddingham <mark at livecode.com> wrote:
>> On my non-Retina iMac, zooming the desktop in, the image is 4x4 solid dark blue - because it is downscaling by a factor of two, each pixel will be an average of 4 pixels - 50% black, 50% blue which is 50% blue (0,0,127 or thereabouts).